Attachment for printing presses



y *May 29, 1928.

J. J. CARROLL ATTACHMENT FOR PRINTING PRESSES Filed Feb. 25, 1927 2 SheetsSheet l T iff/mw May 29, 1928. 1,671,343

J. J. CARROLL ATTACHMENT FOR PRINTING PRESSES Filed Feb. 25, 1927 2 Sheets-Sheet 2 Patented May 29,y 1928.`

' UNITED sTAiEsl PATENT oFFIcE.-

JOSEPH J. CARROLL, or NEW YORK, N. Y., AssIGNoRv OF ONE-Trnn To HENRY W.

FAERBER, F FOREST HILLS, NEW YQRK, AND ONE-THIRD TO CHARLES E. CRONIN,

OF LINDEN, NEW '.TIEItSIElY.` l

ATTAOHMENT ron PnINTING rnnssns.

Application med February'za, 19271." serial No.- 176,290.

The present invention relates to attach'-l ments for printing presses and more particularly refers to a devicel for securing the accuratev placement of printing plates whereby the margin; spaces extending about the printed text in bound volumes may be 'uniform andv present a neat and attractive Vappearanc'ej A 'Heretofore great difliculty has been experienced in securing accurate placement of the plates used in printing and because of l Y inaccuratepla'cement of printing plates dis M crepances appear which detract from the appearance of the work. An object of the invention is to provide a device which willA avoid suchv difficulty, which is of a simple and readily operable construction7 and Which will secure accurate-results and be uniformly faithful in its work." v

With the foregoing' and other objects in View, the invention will be more fully described hereinafter, and Will be morel particularly pointed out in the claims appended hereto. In the drawings, wherein like symbols refer to like or corresponding parts'throughout the several views, f

Figure 1 is a fragmentary planvievv, withfr parts in section, of a printing press equipped with marking devices; v

Figure 2 isa section taken on the'line 2--2 in Figure l; f l y vFigure 3 is a' fragmentary side view of a make-ready cylinder and marking means,"

view of avsupporting arm and marking device;

Figure 5 isa section taken ,on the lino 5,-5 in Figure 4:; andl Figure'vis a perspective view of a second form of' marking device.

Referring more particularly to the drawings 7 designates a plate lcylinderof a printing press y and 8 a make-ready cylinder. Heretofore,printing plates, as 9, have been secured to a plate cylinder, as 7, in positions assumed tol be approximately correct. The face of a 'make-ready cylinder, as 8, being covered with paper, the cylinders have been revolved and impressions.' from the plates 9 on the plate cylinder transferred to the.

paper on the facey ofthe. make-ready cylin- Figure 41 is an enlarged side fragmentaryv der. After adjustments of the plates 9 have been made more impressions are made on paper, wit-h'which the make-readyfcylinder` is faced, `in efforts to ascertainl Whether the plates have been properly adjusted, 4and ythe processis continued until what are deemedv v satisfactory results are obtained. All this takes time and these Lrepeatedefforts do not always result yin true placement of the plates. If the pages in a printed'volume are held tothe light it will be found that `in feW instancesfdoes the lineation on the obverse side of a page register accurately. with that on the reverse side, and consequently.l the margin .spaces above, below and at'both sides of the pagesare not uniform but vary throughout the volume.' *Thus the inequalities appear in the positions of the printed matter on the pages of the bound volume.

In the drawings I showa yshaft 11 mounted inl appropriate bearings 12 and l13 sek as by set f screws 16, or other appropriate y devices whichvpermit of the arms being adjusted both axially Valong' the shaft and angularly or circumferentially about the same. In Figure 5v the arms 14 are shown as adapted to receive stub shafts 17.v To this end the arms maybe provided with threaded openings 18 for receiving threaded ends of Vthe stub shafts which may be secured against rotation l. as by set screws'19. The stub shafts' 17v areshownv as provided with heads 20 for confining in place sleeves, as 21, shown' as confined at their other ends b'y `arms 14'. The sleeves 21 are shownvas carrying webs 22 to which marking Wheels or discs 23, are shownA as secured. I'prefer that these marking Wheels be' made of 'a composition of aluminum and lead, but any marking device may be employed'vvhich Will make a clean clear mark, suchasshoWn at 24 in Figure 1', upon the paper on the face of the make-ready cylinder. Screws-or other fastenings 25 are shownpassed through the Web 22 and into the marking- Wheels or discs 23. These screws or fasteningsf 25 serve to hold'such discs in4 place until their renewal is advisable. The sleeve 21 is shown as held adjustably upon the shaftv 17 by a set screw, `asf. As.the--Wheel23 becomes Wornet one point. it .may beturnedlbyzunloosening the set screw, as 26, to expose a fresh portion of the periphery of the Wheel 23to thejpaper` to be marked. -T-he lines 24 Wil'l'indicate the side `lines 4Wit-hin which the printing should be done. To mark the top and bottom lines `Within Which the printing should be done a marker suc'h as is vshownV in Figure 6 may be employed in ,conjuncj tion with a bar 28. The bar is .shown as extending `longitudinelly.along the lsurface of the make-ready cylinderv @outside of the papeiwon the facefof, .the cylinder Sand may be heldinplacefbywset screws,.as 29 shown as ,engaging radially into4 the cylinder'. The

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marker illustrated in Figure vr(iis show-nas provided With inarlringl blo'cls .or pencilsiSO and lheld detachahly to. a connecting; piece up against opposite straight edges of....the.

ba-rIQSQWihereby theymay. beguided by such straight edges.y 'Ifhehandlamay bemoved lengthwise of; the bar. QSfandlines produced upon. thepaper ion the :face of the makeready .cylinder j upon` `bothl opposite `sidesof saidfgguideibar:28. `The barv may ,thennhe removedeand l:placed in positionfupon ,another part of theinakefready cylinder, Where-.the

, i operationof transverse marking imay be repeated.A Thein'arloingblocks SOiaud all may; A/he in ade `of, a composition of alnn'iinium and lead, but Vany marking device may` be employed which `will yieldan impressionon theUpa-per on the face of'thecmake-ready cylinder. 1

'lVhen the,y paper on the face ofi the makeready .cylinder ,has been marked hy both markingQdevices it; will present the appearance, ofia` series ofblocks. fllhefpress. being placed ,in operationithe gplates i9 onthecylinlder7 will .print on the .pape-1 onthemiakeready Acylinder 8 :If-the plates `dofnot truly register Withiny the fblocksthe positions of such plates Qcan be` adjusted funtil; they. print exactlywhere v.they are desired .to print.

After .secuningthimproperposition of the plates` the press isfready fOrtheoperatiOn ofprinting and the result will be the productiony ofna sheet in whichaccurate .regis-i tration is secured Iupon both obverse and reverse faces'. f l Tfhe `shaft/'11,may `be provided'with an operating' arm,v as 36, shown Aas extending `sleeve adjustably carriedby saidstub arm,

at one side thereof and as having a screw shaft-87v With a vT-head, .such screw shaft being'v adapted to register with vthreaded openings, as 38, rin the frame, whereby to secure the devicev either in the operative position shown'in full ifi-nes -in Figures 'Zand 3, -or in thefiinoperative position i,indicated It is obviousl that various changes and Ymodilications'maybe made in the details of `construction. and .design of the above specilically described embodiment of my ininder of a:printingpressadaptedtto carry v paper thereon .on which experimental impressions Lare, made, marking means `.for

marking upon the paper While on the.,mal;e-

ready cylinder outlines Within Which the `experimental. impressions are made,.and.means Y,

for supporting said marking-means rela? tively. to the makefready cylinder. y

.2. In xa printing press having a printing cylinder .with yprinting plates Aadjustable thereon :and .a make-ready, cylindery adapted to carry. paper thereon, meansifor marking said paper on said ,.mairefready cylinder both .laterally and longitudinallyof said cylinder to produce blockedfo `spaces forex perimental printing .from sa-id plates,rand

means 4; for .supporting L the marking means relatively. .to the :make-readyA cylinder. .y

.a printing s., press having a makeready cylinder, a shaft, means to supportthe shaft` adjacent .theeylinden ,arms on said shaft,.andtmarkers carried .on said arms adapted to comefin contactwithpaper on the make-ready cylinder. Y g

4t.. In aglprin'ting ,press l1avi.1ig..amake cylinder adapted to supportpaper.onwhich experimental ,impressions I. are 4.,lliade, .a rock shaft, means to supportthe rook shaftvadjacen rthe cylinder, .means for shifting, said rock shaft. .and for securing itA `in,.foperative or ,inoperative positions,r .and markers carried by said rock .shaftand-.adaptedi to fengage'the paper on the make-ready cylinder.`

5T In a,.printing I,presshaving ama'ke` ready cylinder adaptedto. sppport ipaper a rock.l shaft,` meansV for ournaling; .saidi rock shaft adjacent the cylinder, .meansforangu larly moving saidiroclr shaft,..,arms ,-on: said rock shaft adjustable both .axially land .angulail-y of Athe rock shaft, andadjustable markers carried by said'armsffor. engaging the paper on .the make-ready cylinder; I

'6. In a printing 'press havingpamake? ready cylinder adapted 'to support paper, snp porting means adj acent' the cylinder,` .an arijn .adjustably mounted on `said supporting means, a. stub shaft carriedby said arm, ,a

and a marker carried by said sleeve.

lll

"7. For use in a printing press having a make-ready cylinder adapted to support paper,l a bar removably carried by said 'cylinder, and a marking device for marking the paper upon the cylinder and for cooperating with the bar, said marking device including a connecting piece for straddling said bar, and spaced markers carried by said connecting piece. y

8. For use in a printing'press having a make-ready cylinder adapted to. support paper, a bar removably afxed to the cy1invder and extending Substantially in the direcof the bar, said marking device comprising a connecting piece for straddling the bar,

and relatively adjustable inarkerscarried by said connecting piece and adapted to move simultaneously along opposite side edges of said bar. Y i

In testimony whereof I affix my signature.

JOSEPH J. CARROLL. 

